21798-24-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21798-24-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,7,9 and 8 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 21798-24:
(7*2)+(6*1)+(5*7)+(4*9)+(3*8)+(2*2)+(1*4)=123
123 % 10 = 3
So 21798-24-3 is a valid CAS Registry Number.
21798-24-3Relevant articles and documents
OXAZOLONES. PART VI. REACTION OF 5(4H)-OXAZOLONES WITH NITRILE IMINES: SYNTHESIS OF 1H-1,2,4-TRIAZOLES THROUGH CYCLOADDITION
Gelmi, Maria Luisa,Pocar, Donato,Riva, Raul
, p. 315 - 320 (2007/10/02)
5(4H)-Oxazolones (1) react as dipolarophiles in cycloadditions with nitrile imines generated from tetrazoles (2) in refluxing anisole affording two 1H-1,2,4-triazole derivatives (3) and diarylethylenes (4).
